[deliverable/linux.git] / drivers / hid / hid-wacom.c

/*
 *  Bluetooth Wacom Tablet support
 *
 *  Copyright (c) 1999 Andreas Gal
 *  Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
 *  Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
 *  Copyright (c) 2006-2007 Jiri Kosina
 *  Copyright (c) 2007 Paul Walmsley
 *  Copyright (c) 2008 Jiri Slaby <jirislaby@gmail.com>
 *  Copyright (c) 2006 Andrew Zabolotny <zap@homelink.ru>
 *  Copyright (c) 2009 Bastien Nocera <hadess@hadess.net>
 *  Copyright (c) 2011 Przemysław Firszt <przemo@firszt.eu>
 */

/*
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation; either version 2 of the License, or (at your option)
 * any later version.
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <linux/device.h>
#include <linux/hid.h>
#include <linux/module.h>
#include <linux/slab.h>
#ifdef CONFIG_HID_WACOM_POWER_SUPPLY
#include <linux/power_supply.h>
#endif

#include "hid-ids.h"

struct wacom_data {
	__u16 tool;
	unsigned char butstate;
	__u8 features;
	unsigned char high_speed;
#ifdef CONFIG_HID_WACOM_POWER_SUPPLY
	int battery_capacity;
	struct power_supply battery;
	struct power_supply ac;
#endif
};

#ifdef CONFIG_HID_WACOM_POWER_SUPPLY
/*percent of battery capacity, 0 means AC online*/
static unsigned short batcap[8] = { 1, 15, 25, 35, 50, 70, 100, 0 };

static enum power_supply_property wacom_battery_props[] = {
	POWER_SUPPLY_PROP_PRESENT,
	POWER_SUPPLY_PROP_CAPACITY,
	POWER_SUPPLY_PROP_SCOPE,
};

static enum power_supply_property wacom_ac_props[] = {
	POWER_SUPPLY_PROP_PRESENT,
	POWER_SUPPLY_PROP_ONLINE,
	POWER_SUPPLY_PROP_SCOPE,
};

static int wacom_battery_get_property(struct power_supply *psy,
				enum power_supply_property psp,
				union power_supply_propval *val)
{
	struct wacom_data *wdata = container_of(psy,
					struct wacom_data, battery);
	int power_state = batcap[wdata->battery_capacity];
	int ret = 0;

	switch (psp) {
	case POWER_SUPPLY_PROP_PRESENT:
		val->intval = 1;
		break;
	case POWER_SUPPLY_PROP_SCOPE:
		val->intval = POWER_SUPPLY_SCOPE_DEVICE;
		break;
	case POWER_SUPPLY_PROP_CAPACITY:
		/* show 100% battery capacity when charging */
		if (power_state == 0)
			val->intval = 100;
		else
			val->intval = power_state;
		break;
	default:
		ret = -EINVAL;
		break;
	}
	return ret;
}

static int wacom_ac_get_property(struct power_supply *psy,
				enum power_supply_property psp,
				union power_supply_propval *val)
{
	struct wacom_data *wdata = container_of(psy, struct wacom_data, ac);
	int power_state = batcap[wdata->battery_capacity];
	int ret = 0;

	switch (psp) {
	case POWER_SUPPLY_PROP_PRESENT:
		/* fall through */
	case POWER_SUPPLY_PROP_ONLINE:
		if (power_state == 0)
			val->intval = 1;
		else
			val->intval = 0;
		break;
	case POWER_SUPPLY_PROP_SCOPE:
		val->intval = POWER_SUPPLY_SCOPE_DEVICE;
		break;
	default:
		ret = -EINVAL;
		break;
	}
	return ret;
}
#endif

static void wacom_set_features(struct hid_device *hdev)
{
	int ret;
	__u8 rep_data[2];

	/*set high speed, tablet mode*/
	rep_data[0] = 0x03;
	rep_data[1] = 0x20;
	ret = hdev->hid_output_raw_report(hdev, rep_data, 2,
				HID_FEATURE_REPORT);
	return;
}

static void wacom_poke(struct hid_device *hdev, u8 speed)
{
	struct wacom_data *wdata = hid_get_drvdata(hdev);
	int limit, ret;
	char rep_data[2];

	rep_data[0] = 0x03 ; rep_data[1] = 0x00;
	limit = 3;
	do {
		ret = hdev->hid_output_raw_report(hdev, rep_data, 2,
				HID_FEATURE_REPORT);
	} while (ret < 0 && limit-- > 0);

	if (ret >= 0) {
		if (speed == 0)
			rep_data[0] = 0x05;
		else
			rep_data[0] = 0x06;

		rep_data[1] = 0x00;
		limit = 3;
		do {
			ret = hdev->hid_output_raw_report(hdev, rep_data, 2,
					HID_FEATURE_REPORT);
		} while (ret < 0 && limit-- > 0);

		if (ret >= 0) {
			wdata->high_speed = speed;
			return;
		}
	}

	/*
	 * Note that if the raw queries fail, it's not a hard failure and it
	 * is safe to continue
	 */
	hid_warn(hdev, "failed to poke device, command %d, err %d\n",
		 rep_data[0], ret);
	return;
}

static ssize_t wacom_show_speed(struct device *dev,
				struct device_attribute
				*attr, char *buf)
{
	struct wacom_data *wdata = dev_get_drvdata(dev);

	return snprintf(buf, PAGE_SIZE, "%i\n", wdata->high_speed);
}

static ssize_t wacom_store_speed(struct device *dev,
				struct device_attribute *attr,
				const char *buf, size_t count)
{
	struct hid_device *hdev = container_of(dev, struct hid_device, dev);
	int new_speed;

	if (sscanf(buf, "%1d", &new_speed ) != 1)
		return -EINVAL;

	if (new_speed == 0 || new_speed == 1) {
		wacom_poke(hdev, new_speed);
		return strnlen(buf, PAGE_SIZE);
	} else
		return -EINVAL;
}

static DEVICE_ATTR(speed, S_IRUGO | S_IWUSR | S_IWGRP,
		wacom_show_speed, wacom_store_speed);

static int wacom_gr_parse_report(struct hid_device *hdev,
			struct wacom_data *wdata,
			struct input_dev *input, unsigned char *data)
{
	int tool, x, y, rw;

	tool = 0;
	/* Get X & Y positions */
	x = le16_to_cpu(*(__le16 *) &data[2]);
	y = le16_to_cpu(*(__le16 *) &data[4]);

	/* Get current tool identifier */
	if (data[1] & 0x90) { /* If pen is in the in/active area */
		switch ((data[1] >> 5) & 3) {
		case 0:	/* Pen */
			tool = BTN_TOOL_PEN;
			break;

		case 1: /* Rubber */
			tool = BTN_TOOL_RUBBER;
			break;

		case 2: /* Mouse with wheel */
		case 3: /* Mouse without wheel */
			tool = BTN_TOOL_MOUSE;
			break;
		}

		/* Reset tool if out of active tablet area */
		if (!(data[1] & 0x10))
			tool = 0;
	}

	/* If tool changed, notify input subsystem */
	if (wdata->tool != tool) {
		if (wdata->tool) {
			/* Completely reset old tool state */
			if (wdata->tool == BTN_TOOL_MOUSE) {
				input_report_key(input, BTN_LEFT, 0);
				input_report_key(input, BTN_RIGHT, 0);
				input_report_key(input, BTN_MIDDLE, 0);
				input_report_abs(input, ABS_DISTANCE,
					input_abs_get_max(input, ABS_DISTANCE));
			} else {
				input_report_key(input, BTN_TOUCH, 0);
				input_report_key(input, BTN_STYLUS, 0);
				input_report_key(input, BTN_STYLUS2, 0);
				input_report_abs(input, ABS_PRESSURE, 0);
			}
			input_report_key(input, wdata->tool, 0);
			input_sync(input);
		}
		wdata->tool = tool;
		if (tool)
			input_report_key(input, tool, 1);
	}

	if (tool) {
		input_report_abs(input, ABS_X, x);
		input_report_abs(input, ABS_Y, y);

		switch ((data[1] >> 5) & 3) {
		case 2: /* Mouse with wheel */
			input_report_key(input, BTN_MIDDLE, data[1] & 0x04);
			rw = (data[6] & 0x01) ? -1 :
				(data[6] & 0x02) ? 1 : 0;
			input_report_rel(input, REL_WHEEL, rw);
			/* fall through */

		case 3: /* Mouse without wheel */
			input_report_key(input, BTN_LEFT, data[1] & 0x01);
			input_report_key(input, BTN_RIGHT, data[1] & 0x02);
			/* Compute distance between mouse and tablet */
			rw = 44 - (data[6] >> 2);
			if (rw < 0)
				rw = 0;
			else if (rw > 31)
				rw = 31;
			input_report_abs(input, ABS_DISTANCE, rw);
			break;

		default:
			input_report_abs(input, ABS_PRESSURE,
					data[6] | (((__u16) (data[1] & 0x08)) << 5));
			input_report_key(input, BTN_TOUCH, data[1] & 0x01);
			input_report_key(input, BTN_STYLUS, data[1] & 0x02);
			input_report_key(input, BTN_STYLUS2, (tool == BTN_TOOL_PEN) && data[1] & 0x04);
			break;
		}

		input_sync(input);
	}

	/* Report the state of the two buttons at the top of the tablet
	 * as two extra fingerpad keys (buttons 4 & 5). */
	rw = data[7] & 0x03;
	if (rw != wdata->butstate) {
		wdata->butstate = rw;
		input_report_key(input, BTN_0, rw & 0x02);
		input_report_key(input, BTN_1, rw & 0x01);
		input_report_key(input, BTN_TOOL_FINGER, 0xf0);
		input_event(input, EV_MSC, MSC_SERIAL, 0xf0);
		input_sync(input);
	}

#ifdef CONFIG_HID_WACOM_POWER_SUPPLY
	/* Store current battery capacity */
	rw = (data[7] >> 2 & 0x07);
	if (rw != wdata->battery_capacity)
		wdata->battery_capacity = rw;
#endif
	return 1;
}

static void wacom_i4_parse_pen_report(struct wacom_data *wdata,
			struct input_dev *input, unsigned char *data)
{
	__u16 x, y, pressure;
	__u32 id;

	switch (data[1]) {
	case 0x80: /* Out of proximity report */
		input_report_key(input, BTN_TOUCH, 0);
		input_report_abs(input, ABS_PRESSURE, 0);
		input_report_key(input, wdata->tool, 0);
		wdata->tool = 0;
		input_sync(input);
		break;
	case 0xC2: /* Tool report */
		id = ((data[2] << 4) | (data[3] >> 4) |
			((data[7] & 0x0f) << 20) |
			((data[8] & 0xf0) << 12)) & 0xfffff;

		switch (id) {
		case 0x802:
			wdata->tool = BTN_TOOL_PEN;
			break;
		case 0x80A:
			wdata->tool = BTN_TOOL_RUBBER;
			break;
		}
		break;
	default: /* Position/pressure report */
		x = data[2] << 9 | data[3] << 1 | ((data[9] & 0x02) >> 1);
		y = data[4] << 9 | data[5] << 1 | (data[9] & 0x01);
		pressure = (data[6] << 3) | ((data[7] & 0xC0) >> 5)
			| (data[1] & 0x01);

		input_report_key(input, BTN_TOUCH, pressure > 1);

		input_report_key(input, BTN_STYLUS, data[1] & 0x02);
		input_report_key(input, BTN_STYLUS2, data[1] & 0x04);
		input_report_key(input, wdata->tool, 1);
		input_report_abs(input, ABS_X, x);
		input_report_abs(input, ABS_Y, y);
		input_report_abs(input, ABS_PRESSURE, pressure);
		input_sync(input);
		break;
	}

	return;
}

static void wacom_i4_parse_report(struct hid_device *hdev,
			struct wacom_data *wdata,
			struct input_dev *input, unsigned char *data)
{
	switch (data[0]) {
	case 0x00: /* Empty report */
		break;
	case 0x02: /* Pen report */
		wacom_i4_parse_pen_report(wdata, input, data);
		break;
	case 0x03: /* Features Report */
		wdata->features = data[2];
		break;
	case 0x0C: /* Button report */
		break;
	default:
		hid_err(hdev, "Unknown report: %d,%d\n", data[0], data[1]);
		break;
	}
}

static int wacom_raw_event(struct hid_device *hdev, struct hid_report *report,
		u8 *raw_data, int size)
{
	struct wacom_data *wdata = hid_get_drvdata(hdev);
	struct hid_input *hidinput;
	struct input_dev *input;
	unsigned char *data = (unsigned char *) raw_data;
	int i;

	if (!(hdev->claimed & HID_CLAIMED_INPUT))
		return 0;

	hidinput = list_entry(hdev->inputs.next, struct hid_input, list);
	input = hidinput->input;

	/* Check if this is a tablet report */
	if (data[0] != 0x03)
		return 0;

	switch (hdev->product) {
	case USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH:
		return wacom_gr_parse_report(hdev, wdata, input, data);
		break;
	case USB_DEVICE_ID_WACOM_INTUOS4_BLUETOOTH:
		i = 1;

		switch (data[0]) {
		case 0x04:
			wacom_i4_parse_report(hdev, wdata, input, data + i);
			i += 10;
			/* fall through */
		case 0x03:
			wacom_i4_parse_report(hdev, wdata, input, data + i);
			i += 10;
			wacom_i4_parse_report(hdev, wdata, input, data + i);
			break;
		default:
			hid_err(hdev, "Unknown report: %d,%d size:%d\n",
					data[0], data[1], size);
			return 0;
		}
	}
	return 1;
}

static int wacom_input_mapped(struct hid_device *hdev, struct hid_input *hi,
	struct hid_field *field, struct hid_usage *usage, unsigned long **bit,
								int *max)
{
	struct input_dev *input = hi->input;

	__set_bit(INPUT_PROP_POINTER, input->propbit);

	/* Basics */
	input->evbit[0] |= BIT(EV_KEY) | BIT(EV_ABS) | BIT(EV_REL);

	__set_bit(REL_WHEEL, input->relbit);

	__set_bit(BTN_TOOL_PEN, input->keybit);
	__set_bit(BTN_TOUCH, input->keybit);
	__set_bit(BTN_STYLUS, input->keybit);
	__set_bit(BTN_STYLUS2, input->keybit);
	__set_bit(BTN_LEFT, input->keybit);
	__set_bit(BTN_RIGHT, input->keybit);
	__set_bit(BTN_MIDDLE, input->keybit);

	/* Pad */
	input->evbit[0] |= BIT(EV_MSC);

	__set_bit(MSC_SERIAL, input->mscbit);

	__set_bit(BTN_0, input->keybit);
	__set_bit(BTN_1, input->keybit);
	__set_bit(BTN_TOOL_FINGER, input->keybit);

	/* Distance, rubber and mouse */
	__set_bit(BTN_TOOL_RUBBER, input->keybit);
	__set_bit(BTN_TOOL_MOUSE, input->keybit);

	switch (hdev->product) {
	case USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH:
		input_set_abs_params(input, ABS_X, 0, 16704, 4, 0);
		input_set_abs_params(input, ABS_Y, 0, 12064, 4, 0);
		input_set_abs_params(input, ABS_PRESSURE, 0, 511, 0, 0);
		input_set_abs_params(input, ABS_DISTANCE, 0, 32, 0, 0);
		break;
	case USB_DEVICE_ID_WACOM_INTUOS4_BLUETOOTH:
		__set_bit(ABS_MISC, input->absbit);
		input_set_abs_params(input, ABS_X, 0, 40640, 4, 0);
		input_set_abs_params(input, ABS_Y, 0, 25400, 4, 0);
		input_set_abs_params(input, ABS_PRESSURE, 0, 2047, 0, 0);
		break;
	}

	return 0;
}

static int wacom_probe(struct hid_device *hdev,
		const struct hid_device_id *id)
{
	struct wacom_data *wdata;
	int ret;

	wdata = kzalloc(sizeof(*wdata), GFP_KERNEL);
	if (wdata == NULL) {
		hid_err(hdev, "can't alloc wacom descriptor\n");
		return -ENOMEM;
	}

	hid_set_drvdata(hdev, wdata);

	/* Parse the HID report now */
	ret = hid_parse(hdev);
	if (ret) {
		hid_err(hdev, "parse failed\n");
		goto err_free;
	}

	ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
	if (ret) {
		hid_err(hdev, "hw start failed\n");
		goto err_free;
	}

	ret = device_create_file(&hdev->dev, &dev_attr_speed);
	if (ret)
		hid_warn(hdev,
			 "can't create sysfs speed attribute err: %d\n", ret);

	switch (hdev->product) {
	case USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH:
		/* Set Wacom mode 2 with high reporting speed */
		wacom_poke(hdev, 1);
		break;
	case USB_DEVICE_ID_WACOM_INTUOS4_BLUETOOTH:
		wdata->features = 0;
		wacom_set_features(hdev);
		break;
	}

#ifdef CONFIG_HID_WACOM_POWER_SUPPLY
	wdata->battery.properties = wacom_battery_props;
	wdata->battery.num_properties = ARRAY_SIZE(wacom_battery_props);
	wdata->battery.get_property = wacom_battery_get_property;
	wdata->battery.name = "wacom_battery";
	wdata->battery.type = POWER_SUPPLY_TYPE_BATTERY;
	wdata->battery.use_for_apm = 0;


	ret = power_supply_register(&hdev->dev, &wdata->battery);
	if (ret) {
		hid_warn(hdev, "can't create sysfs battery attribute, err: %d\n",
			 ret);
		goto err_battery;
	}

	power_supply_powers(&wdata->battery, &hdev->dev);

	wdata->ac.properties = wacom_ac_props;
	wdata->ac.num_properties = ARRAY_SIZE(wacom_ac_props);
	wdata->ac.get_property = wacom_ac_get_property;
	wdata->ac.name = "wacom_ac";
	wdata->ac.type = POWER_SUPPLY_TYPE_MAINS;
	wdata->ac.use_for_apm = 0;

	ret = power_supply_register(&hdev->dev, &wdata->ac);
	if (ret) {
		hid_warn(hdev,
			 "can't create ac battery attribute, err: %d\n", ret);
		goto err_ac;
	}

	power_supply_powers(&wdata->ac, &hdev->dev);
#endif
	return 0;

#ifdef CONFIG_HID_WACOM_POWER_SUPPLY
err_ac:
	power_supply_unregister(&wdata->battery);
err_battery:
	device_remove_file(&hdev->dev, &dev_attr_speed);
	hid_hw_stop(hdev);
#endif
err_free:
	kfree(wdata);
	return ret;
}

static void wacom_remove(struct hid_device *hdev)
{
#ifdef CONFIG_HID_WACOM_POWER_SUPPLY
	struct wacom_data *wdata = hid_get_drvdata(hdev);
#endif
	device_remove_file(&hdev->dev, &dev_attr_speed);
	hid_hw_stop(hdev);

#ifdef CONFIG_HID_WACOM_POWER_SUPPLY
	power_supply_unregister(&wdata->battery);
	power_supply_unregister(&wdata->ac);
#endif
	kfree(hid_get_drvdata(hdev));
}

static const struct hid_device_id wacom_devices[] = {
	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH) },
	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS4_BLUETOOTH) },

	{ }
};
MODULE_DEVICE_TABLE(hid, wacom_devices);

static struct hid_driver wacom_driver = {
	.name = "wacom",
	.id_table = wacom_devices,
	.probe = wacom_probe,
	.remove = wacom_remove,
	.raw_event = wacom_raw_event,
	.input_mapped = wacom_input_mapped,
};

static int __init wacom_init(void)
{
	int ret;

	ret = hid_register_driver(&wacom_driver);
	if (ret)
		pr_err("can't register wacom driver\n");
	return ret;
}

static void __exit wacom_exit(void)
{
	hid_unregister_driver(&wacom_driver);
}

module_init(wacom_init);
module_exit(wacom_exit);
MODULE_LICENSE("GPL");
Commit	Line	Data
ca2dcd40 BN	1	/*
	2	* Bluetooth Wacom Tablet support
	3	*
	4	* Copyright (c) 1999 Andreas Gal
	5	* Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
	6	* Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
	7	* Copyright (c) 2006-2007 Jiri Kosina
	8	* Copyright (c) 2007 Paul Walmsley
	9	* Copyright (c) 2008 Jiri Slaby <jirislaby@gmail.com>
	10	* Copyright (c) 2006 Andrew Zabolotny <zap@homelink.ru>
	11	* Copyright (c) 2009 Bastien Nocera <hadess@hadess.net>
78761ff9	12	* Copyright (c) 2011 Przemysław Firszt <przemo@firszt.eu>
ca2dcd40 BN	13	*/
	14
	15	/*
	16	* This program is free software; you can redistribute it and/or modify it
	17	* under the terms of the GNU General Public License as published by the Free
	18	* Software Foundation; either version 2 of the License, or (at your option)
	19	* any later version.
	20	*/
	21
4291ee30 JP	22	#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
4291ee30 JP	23
ca2dcd40 BN	24	#include <linux/device.h>
	25	#include <linux/hid.h>
	26	#include <linux/module.h>
5a0e3ad6	27	#include <linux/slab.h>
59d2334a PF	28	#ifdef CONFIG_HID_WACOM_POWER_SUPPLY
	29	#include <linux/power_supply.h>
	30	#endif
ca2dcd40 BN	31
	32	#include "hid-ids.h"
	33
	34	struct wacom_data {
	35	__u16 tool;
	36	unsigned char butstate;
78761ff9	37	__u8 features;
20a3ce7e	38	unsigned char high_speed;
59d2334a PF	39	#ifdef CONFIG_HID_WACOM_POWER_SUPPLY
	40	int battery_capacity;
	41	struct power_supply battery;
	42	struct power_supply ac;
	43	#endif
ca2dcd40 BN	44	};
ca2dcd40 BN	45
59d2334a PF	46	#ifdef CONFIG_HID_WACOM_POWER_SUPPLY
	47	/percent of battery capacity, 0 means AC online/
	48	static unsigned short batcap[8] = { 1, 15, 25, 35, 50, 70, 100, 0 };
	49
	50	static enum power_supply_property wacom_battery_props[] = {
	51	POWER_SUPPLY_PROP_PRESENT,
73db8813 JF	52	POWER_SUPPLY_PROP_CAPACITY,
73db8813 JF	53	POWER_SUPPLY_PROP_SCOPE,
59d2334a PF	54	};
	55
	56	static enum power_supply_property wacom_ac_props[] = {
	57	POWER_SUPPLY_PROP_PRESENT,
73db8813 JF	58	POWER_SUPPLY_PROP_ONLINE,
73db8813 JF	59	POWER_SUPPLY_PROP_SCOPE,
59d2334a PF	60	};
	61
	62	static int wacom_battery_get_property(struct power_supply *psy,
	63	enum power_supply_property psp,
	64	union power_supply_propval *val)
	65	{
	66	struct wacom_data *wdata = container_of(psy,
	67	struct wacom_data, battery);
	68	int power_state = batcap[wdata->battery_capacity];
	69	int ret = 0;
	70
	71	switch (psp) {
	72	case POWER_SUPPLY_PROP_PRESENT:
	73	val->intval = 1;
	74	break;
73db8813 JF	75	case POWER_SUPPLY_PROP_SCOPE:
	76	val->intval = POWER_SUPPLY_SCOPE_DEVICE;
	77	break;
59d2334a PF	78	case POWER_SUPPLY_PROP_CAPACITY:
	79	/* show 100% battery capacity when charging */
	80	if (power_state == 0)
	81	val->intval = 100;
	82	else
	83	val->intval = power_state;
	84	break;
	85	default:
	86	ret = -EINVAL;
	87	break;
	88	}
	89	return ret;
	90	}
	91
	92	static int wacom_ac_get_property(struct power_supply *psy,
	93	enum power_supply_property psp,
	94	union power_supply_propval *val)
	95	{
	96	struct wacom_data *wdata = container_of(psy, struct wacom_data, ac);
	97	int power_state = batcap[wdata->battery_capacity];
	98	int ret = 0;
	99
	100	switch (psp) {
	101	case POWER_SUPPLY_PROP_PRESENT:
	102	/* fall through */
	103	case POWER_SUPPLY_PROP_ONLINE:
	104	if (power_state == 0)
	105	val->intval = 1;
	106	else
	107	val->intval = 0;
	108	break;
73db8813 JF	109	case POWER_SUPPLY_PROP_SCOPE:
	110	val->intval = POWER_SUPPLY_SCOPE_DEVICE;
	111	break;
59d2334a PF	112	default:
	113	ret = -EINVAL;
	114	break;
	115	}
	116	return ret;
	117	}
	118	#endif
	119
78761ff9 PF	120	static void wacom_set_features(struct hid_device *hdev)
	121	{
	122	int ret;
	123	__u8 rep_data[2];
	124
	125	/set high speed, tablet mode/
	126	rep_data[0] = 0x03;
	127	rep_data[1] = 0x20;
	128	ret = hdev->hid_output_raw_report(hdev, rep_data, 2,
	129	HID_FEATURE_REPORT);
	130	return;
	131	}
	132
06c7c313 PF	133	static void wacom_poke(struct hid_device *hdev, u8 speed)
06c7c313 PF	134	{
20a3ce7e	135	struct wacom_data *wdata = hid_get_drvdata(hdev);
06c7c313 PF	136	int limit, ret;
	137	char rep_data[2];
	138
	139	rep_data[0] = 0x03 ; rep_data[1] = 0x00;
	140	limit = 3;
	141	do {
	142	ret = hdev->hid_output_raw_report(hdev, rep_data, 2,
	143	HID_FEATURE_REPORT);
	144	} while (ret < 0 && limit-- > 0);
	145
	146	if (ret >= 0) {
	147	if (speed == 0)
	148	rep_data[0] = 0x05;
	149	else
	150	rep_data[0] = 0x06;
	151
	152	rep_data[1] = 0x00;
	153	limit = 3;
	154	do {
	155	ret = hdev->hid_output_raw_report(hdev, rep_data, 2,
	156	HID_FEATURE_REPORT);
	157	} while (ret < 0 && limit-- > 0);
	158
20a3ce7e PF	159	if (ret >= 0) {
20a3ce7e PF	160	wdata->high_speed = speed;
06c7c313	161	return;
20a3ce7e	162	}
06c7c313 PF	163	}
	164
	165	/*
	166	* Note that if the raw queries fail, it's not a hard failure and it
	167	* is safe to continue
	168	*/
4291ee30 JP	169	hid_warn(hdev, "failed to poke device, command %d, err %d\n",
4291ee30 JP	170	rep_data[0], ret);
06c7c313 PF	171	return;
	172	}
	173
20a3ce7e PF	174	static ssize_t wacom_show_speed(struct device *dev,
	175	struct device_attribute
	176	attr, char buf)
	177	{
	178	struct wacom_data *wdata = dev_get_drvdata(dev);
	179
	180	return snprintf(buf, PAGE_SIZE, "%i\n", wdata->high_speed);
	181	}
	182
	183	static ssize_t wacom_store_speed(struct device *dev,
	184	struct device_attribute *attr,
	185	const char *buf, size_t count)
	186	{
	187	struct hid_device *hdev = container_of(dev, struct hid_device, dev);
	188	int new_speed;
	189
	190	if (sscanf(buf, "%1d", &new_speed ) != 1)
	191	return -EINVAL;
	192
	193	if (new_speed == 0 \|\| new_speed == 1) {
	194	wacom_poke(hdev, new_speed);
	195	return strnlen(buf, PAGE_SIZE);
	196	} else
	197	return -EINVAL;
	198	}
	199
edd2126a	200	static DEVICE_ATTR(speed, S_IRUGO \| S_IWUSR \| S_IWGRP,
20a3ce7e PF	201	wacom_show_speed, wacom_store_speed);
20a3ce7e PF	202
f6b7efc1 PF	203	static int wacom_gr_parse_report(struct hid_device *hdev,
	204	struct wacom_data *wdata,
	205	struct input_dev input, unsigned char data)
ca2dcd40	206	{
ca2dcd40 BN	207	int tool, x, y, rw;
ca2dcd40 BN	208
ca2dcd40	209	tool = 0;
ca2dcd40 BN	210	/* Get X & Y positions */
	211	x = le16_to_cpu((__le16 ) &data[2]);
	212	y = le16_to_cpu((__le16 ) &data[4]);
	213
	214	/* Get current tool identifier */
	215	if (data[1] & 0x90) { /* If pen is in the in/active area */
	216	switch ((data[1] >> 5) & 3) {
	217	case 0: /* Pen */
	218	tool = BTN_TOOL_PEN;
	219	break;
	220
	221	case 1: /* Rubber */
	222	tool = BTN_TOOL_RUBBER;
	223	break;
	224
	225	case 2: /* Mouse with wheel */
	226	case 3: /* Mouse without wheel */
	227	tool = BTN_TOOL_MOUSE;
	228	break;
	229	}
	230
	231	/* Reset tool if out of active tablet area */
	232	if (!(data[1] & 0x10))
	233	tool = 0;
	234	}
	235
	236	/* If tool changed, notify input subsystem */
	237	if (wdata->tool != tool) {
	238	if (wdata->tool) {
	239	/* Completely reset old tool state */
	240	if (wdata->tool == BTN_TOOL_MOUSE) {
	241	input_report_key(input, BTN_LEFT, 0);
	242	input_report_key(input, BTN_RIGHT, 0);
	243	input_report_key(input, BTN_MIDDLE, 0);
	244	input_report_abs(input, ABS_DISTANCE,
987a6c02	245	input_abs_get_max(input, ABS_DISTANCE));
ca2dcd40 BN	246	} else {
	247	input_report_key(input, BTN_TOUCH, 0);
	248	input_report_key(input, BTN_STYLUS, 0);
	249	input_report_key(input, BTN_STYLUS2, 0);
	250	input_report_abs(input, ABS_PRESSURE, 0);
	251	}
	252	input_report_key(input, wdata->tool, 0);
	253	input_sync(input);
	254	}
	255	wdata->tool = tool;
	256	if (tool)
	257	input_report_key(input, tool, 1);
	258	}
	259
	260	if (tool) {
	261	input_report_abs(input, ABS_X, x);
	262	input_report_abs(input, ABS_Y, y);
	263
	264	switch ((data[1] >> 5) & 3) {
	265	case 2: /* Mouse with wheel */
	266	input_report_key(input, BTN_MIDDLE, data[1] & 0x04);
	267	rw = (data[6] & 0x01) ? -1 :
	268	(data[6] & 0x02) ? 1 : 0;
	269	input_report_rel(input, REL_WHEEL, rw);
	270	/* fall through */
	271
	272	case 3: /* Mouse without wheel */
	273	input_report_key(input, BTN_LEFT, data[1] & 0x01);
	274	input_report_key(input, BTN_RIGHT, data[1] & 0x02);
	275	/* Compute distance between mouse and tablet */
	276	rw = 44 - (data[6] >> 2);
	277	if (rw < 0)
	278	rw = 0;
	279	else if (rw > 31)
	280	rw = 31;
	281	input_report_abs(input, ABS_DISTANCE, rw);
	282	break;
	283
	284	default:
	285	input_report_abs(input, ABS_PRESSURE,
	286	data[6] \| (((__u16) (data[1] & 0x08)) << 5));
	287	input_report_key(input, BTN_TOUCH, data[1] & 0x01);
	288	input_report_key(input, BTN_STYLUS, data[1] & 0x02);
	289	input_report_key(input, BTN_STYLUS2, (tool == BTN_TOOL_PEN) && data[1] & 0x04);
	290	break;
	291	}
	292
	293	input_sync(input);
	294	}
	295
	296	/* Report the state of the two buttons at the top of the tablet
	297	* as two extra fingerpad keys (buttons 4 & 5). */
	298	rw = data[7] & 0x03;
	299	if (rw != wdata->butstate) {
	300	wdata->butstate = rw;
	301	input_report_key(input, BTN_0, rw & 0x02);
	302	input_report_key(input, BTN_1, rw & 0x01);
0e253fdb	303	input_report_key(input, BTN_TOOL_FINGER, 0xf0);
ca2dcd40 BN	304	input_event(input, EV_MSC, MSC_SERIAL, 0xf0);
	305	input_sync(input);
	306	}
	307
59d2334a PF	308	#ifdef CONFIG_HID_WACOM_POWER_SUPPLY
	309	/* Store current battery capacity */
	310	rw = (data[7] >> 2 & 0x07);
	311	if (rw != wdata->battery_capacity)
	312	wdata->battery_capacity = rw;
	313	#endif
ca2dcd40 BN	314	return 1;
ca2dcd40 BN	315	}
78761ff9 PF	316
	317	static void wacom_i4_parse_pen_report(struct wacom_data *wdata,
	318	struct input_dev input, unsigned char data)
	319	{
	320	__u16 x, y, pressure;
	321	__u32 id;
	322
	323	switch (data[1]) {
	324	case 0x80: /* Out of proximity report */
78761ff9 PF	325	input_report_key(input, BTN_TOUCH, 0);
	326	input_report_abs(input, ABS_PRESSURE, 0);
	327	input_report_key(input, wdata->tool, 0);
32db737f	328	wdata->tool = 0;
78761ff9 PF	329	input_sync(input);
	330	break;
	331	case 0xC2: /* Tool report */
	332	id = ((data[2] << 4) \| (data[3] >> 4) \|
	333	((data[7] & 0x0f) << 20) \|
	334	((data[8] & 0xf0) << 12)) & 0xfffff;
	335
	336	switch (id) {
	337	case 0x802:
	338	wdata->tool = BTN_TOOL_PEN;
	339	break;
	340	case 0x80A:
	341	wdata->tool = BTN_TOOL_RUBBER;
	342	break;
	343	}
	344	break;
	345	default: /* Position/pressure report */
	346	x = data[2] << 9 \| data[3] << 1 \| ((data[9] & 0x02) >> 1);
	347	y = data[4] << 9 \| data[5] << 1 \| (data[9] & 0x01);
	348	pressure = (data[6] << 3) \| ((data[7] & 0xC0) >> 5)
	349	\| (data[1] & 0x01);
	350
	351	input_report_key(input, BTN_TOUCH, pressure > 1);
	352
	353	input_report_key(input, BTN_STYLUS, data[1] & 0x02);
	354	input_report_key(input, BTN_STYLUS2, data[1] & 0x04);
	355	input_report_key(input, wdata->tool, 1);
	356	input_report_abs(input, ABS_X, x);
	357	input_report_abs(input, ABS_Y, y);
	358	input_report_abs(input, ABS_PRESSURE, pressure);
	359	input_sync(input);
	360	break;
	361	}
	362
	363	return;
	364	}
	365
	366	static void wacom_i4_parse_report(struct hid_device *hdev,
	367	struct wacom_data *wdata,
	368	struct input_dev input, unsigned char data)
	369	{
	370	switch (data[0]) {
	371	case 0x00: /* Empty report */
	372	break;
	373	case 0x02: /* Pen report */
	374	wacom_i4_parse_pen_report(wdata, input, data);
	375	break;
	376	case 0x03: /* Features Report */
	377	wdata->features = data[2];
	378	break;
	379	case 0x0C: /* Button report */
	380	break;
	381	default:
	382	hid_err(hdev, "Unknown report: %d,%d\n", data[0], data[1]);
	383	break;
	384	}
	385	}
	386
f6b7efc1 PF	387	static int wacom_raw_event(struct hid_device hdev, struct hid_report report,
	388	u8 *raw_data, int size)
	389	{
	390	struct wacom_data *wdata = hid_get_drvdata(hdev);
	391	struct hid_input *hidinput;
	392	struct input_dev *input;
	393	unsigned char data = (unsigned char ) raw_data;
78761ff9	394	int i;
f6b7efc1 PF	395
	396	if (!(hdev->claimed & HID_CLAIMED_INPUT))
	397	return 0;
	398
	399	hidinput = list_entry(hdev->inputs.next, struct hid_input, list);
	400	input = hidinput->input;
	401
	402	/* Check if this is a tablet report */
	403	if (data[0] != 0x03)
	404	return 0;
	405
78761ff9 PF	406	switch (hdev->product) {
	407	case USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH:
	408	return wacom_gr_parse_report(hdev, wdata, input, data);
	409	break;
	410	case USB_DEVICE_ID_WACOM_INTUOS4_BLUETOOTH:
	411	i = 1;
	412
	413	switch (data[0]) {
	414	case 0x04:
	415	wacom_i4_parse_report(hdev, wdata, input, data + i);
	416	i += 10;
	417	/* fall through */
	418	case 0x03:
	419	wacom_i4_parse_report(hdev, wdata, input, data + i);
	420	i += 10;
	421	wacom_i4_parse_report(hdev, wdata, input, data + i);
	422	break;
	423	default:
	424	hid_err(hdev, "Unknown report: %d,%d size:%d\n",
	425	data[0], data[1], size);
	426	return 0;
	427	}
	428	}
	429	return 1;
f6b7efc1	430	}
ca2dcd40	431
3797ef6b DH	432	static int wacom_input_mapped(struct hid_device hdev, struct hid_input hi,
	433	struct hid_field field, struct hid_usage usage, unsigned long **bit,
	434	int *max)
	435	{
	436	struct input_dev *input = hi->input;
	437
f6f12427 JK	438	__set_bit(INPUT_PROP_POINTER, input->propbit);
f6f12427 JK	439
3797ef6b DH	440	/* Basics */
	441	input->evbit[0] \|= BIT(EV_KEY) \| BIT(EV_ABS) \| BIT(EV_REL);
	442
	443	__set_bit(REL_WHEEL, input->relbit);
	444
	445	__set_bit(BTN_TOOL_PEN, input->keybit);
	446	__set_bit(BTN_TOUCH, input->keybit);
	447	__set_bit(BTN_STYLUS, input->keybit);
	448	__set_bit(BTN_STYLUS2, input->keybit);
	449	__set_bit(BTN_LEFT, input->keybit);
	450	__set_bit(BTN_RIGHT, input->keybit);
	451	__set_bit(BTN_MIDDLE, input->keybit);
	452
	453	/* Pad */
	454	input->evbit[0] \|= BIT(EV_MSC);
	455
	456	__set_bit(MSC_SERIAL, input->mscbit);
	457
	458	__set_bit(BTN_0, input->keybit);
	459	__set_bit(BTN_1, input->keybit);
	460	__set_bit(BTN_TOOL_FINGER, input->keybit);
	461
	462	/* Distance, rubber and mouse */
	463	__set_bit(BTN_TOOL_RUBBER, input->keybit);
	464	__set_bit(BTN_TOOL_MOUSE, input->keybit);
	465
78761ff9 PF	466	switch (hdev->product) {
	467	case USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH:
	468	input_set_abs_params(input, ABS_X, 0, 16704, 4, 0);
	469	input_set_abs_params(input, ABS_Y, 0, 12064, 4, 0);
	470	input_set_abs_params(input, ABS_PRESSURE, 0, 511, 0, 0);
	471	input_set_abs_params(input, ABS_DISTANCE, 0, 32, 0, 0);
	472	break;
	473	case USB_DEVICE_ID_WACOM_INTUOS4_BLUETOOTH:
2c653e6b	474	__set_bit(ABS_MISC, input->absbit);
78761ff9 PF	475	input_set_abs_params(input, ABS_X, 0, 40640, 4, 0);
	476	input_set_abs_params(input, ABS_Y, 0, 25400, 4, 0);
	477	input_set_abs_params(input, ABS_PRESSURE, 0, 2047, 0, 0);
	478	break;
	479	}
3797ef6b DH	480
	481	return 0;
	482	}
	483
ca2dcd40 BN	484	static int wacom_probe(struct hid_device *hdev,
	485	const struct hid_device_id *id)
	486	{
ca2dcd40 BN	487	struct wacom_data *wdata;
	488	int ret;
	489
	490	wdata = kzalloc(sizeof(*wdata), GFP_KERNEL);
	491	if (wdata == NULL) {
4291ee30	492	hid_err(hdev, "can't alloc wacom descriptor\n");
ca2dcd40 BN	493	return -ENOMEM;
	494	}
	495
	496	hid_set_drvdata(hdev, wdata);
	497
46a709b9	498	/* Parse the HID report now */
ca2dcd40 BN	499	ret = hid_parse(hdev);
ca2dcd40 BN	500	if (ret) {
4291ee30	501	hid_err(hdev, "parse failed\n");
ca2dcd40 BN	502	goto err_free;
	503	}
	504
	505	ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
	506	if (ret) {
4291ee30	507	hid_err(hdev, "hw start failed\n");
ca2dcd40 BN	508	goto err_free;
	509	}
	510
20a3ce7e PF	511	ret = device_create_file(&hdev->dev, &dev_attr_speed);
20a3ce7e PF	512	if (ret)
4291ee30 JP	513	hid_warn(hdev,
4291ee30 JP	514	"can't create sysfs speed attribute err: %d\n", ret);
342f31e8	515
78761ff9 PF	516	switch (hdev->product) {
	517	case USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH:
	518	/* Set Wacom mode 2 with high reporting speed */
	519	wacom_poke(hdev, 1);
	520	break;
	521	case USB_DEVICE_ID_WACOM_INTUOS4_BLUETOOTH:
	522	wdata->features = 0;
	523	wacom_set_features(hdev);
	524	break;
	525	}
46a709b9	526
59d2334a PF	527	#ifdef CONFIG_HID_WACOM_POWER_SUPPLY
	528	wdata->battery.properties = wacom_battery_props;
	529	wdata->battery.num_properties = ARRAY_SIZE(wacom_battery_props);
	530	wdata->battery.get_property = wacom_battery_get_property;
	531	wdata->battery.name = "wacom_battery";
	532	wdata->battery.type = POWER_SUPPLY_TYPE_BATTERY;
	533	wdata->battery.use_for_apm = 0;
46a709b9	534
35b4c01e	535
59d2334a PF	536	ret = power_supply_register(&hdev->dev, &wdata->battery);
59d2334a PF	537	if (ret) {
4291ee30 JP	538	hid_warn(hdev, "can't create sysfs battery attribute, err: %d\n",
4291ee30 JP	539	ret);
dde58cfc	540	goto err_battery;
59d2334a PF	541	}
59d2334a PF	542
d7cb3dbd PF	543	power_supply_powers(&wdata->battery, &hdev->dev);
d7cb3dbd PF	544
59d2334a PF	545	wdata->ac.properties = wacom_ac_props;
	546	wdata->ac.num_properties = ARRAY_SIZE(wacom_ac_props);
	547	wdata->ac.get_property = wacom_ac_get_property;
	548	wdata->ac.name = "wacom_ac";
	549	wdata->ac.type = POWER_SUPPLY_TYPE_MAINS;
	550	wdata->ac.use_for_apm = 0;
	551
	552	ret = power_supply_register(&hdev->dev, &wdata->ac);
	553	if (ret) {
4291ee30 JP	554	hid_warn(hdev,
4291ee30 JP	555	"can't create ac battery attribute, err: %d\n", ret);
dde58cfc	556	goto err_ac;
59d2334a	557	}
d7cb3dbd PF	558
d7cb3dbd PF	559	power_supply_powers(&wdata->ac, &hdev->dev);
59d2334a	560	#endif
ca2dcd40	561	return 0;
987a6c02	562
dde58cfc DH	563	#ifdef CONFIG_HID_WACOM_POWER_SUPPLY
	564	err_ac:
	565	power_supply_unregister(&wdata->battery);
	566	err_battery:
	567	device_remove_file(&hdev->dev, &dev_attr_speed);
	568	hid_hw_stop(hdev);
	569	#endif
ca2dcd40 BN	570	err_free:
	571	kfree(wdata);
	572	return ret;
	573	}
	574
	575	static void wacom_remove(struct hid_device *hdev)
	576	{
59d2334a PF	577	#ifdef CONFIG_HID_WACOM_POWER_SUPPLY
	578	struct wacom_data *wdata = hid_get_drvdata(hdev);
	579	#endif
9086617e	580	device_remove_file(&hdev->dev, &dev_attr_speed);
ca2dcd40	581	hid_hw_stop(hdev);
59d2334a PF	582
	583	#ifdef CONFIG_HID_WACOM_POWER_SUPPLY
	584	power_supply_unregister(&wdata->battery);
	585	power_supply_unregister(&wdata->ac);
	586	#endif
ca2dcd40 BN	587	kfree(hid_get_drvdata(hdev));
	588	}
	589
	590	static const struct hid_device_id wacom_devices[] = {
	591	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH) },
78761ff9	592	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS4_BLUETOOTH) },
d5e0a06f	593
ca2dcd40 BN	594	{ }
	595	};
	596	MODULE_DEVICE_TABLE(hid, wacom_devices);
	597
	598	static struct hid_driver wacom_driver = {
	599	.name = "wacom",
	600	.id_table = wacom_devices,
	601	.probe = wacom_probe,
	602	.remove = wacom_remove,
	603	.raw_event = wacom_raw_event,
3797ef6b	604	.input_mapped = wacom_input_mapped,
ca2dcd40 BN	605	};
ca2dcd40 BN	606
a24f423b	607	static int __init wacom_init(void)
ca2dcd40 BN	608	{
	609	int ret;
	610
	611	ret = hid_register_driver(&wacom_driver);
	612	if (ret)
4291ee30	613	pr_err("can't register wacom driver\n");
ca2dcd40 BN	614	return ret;
	615	}
	616
a24f423b	617	static void __exit wacom_exit(void)
ca2dcd40 BN	618	{
	619	hid_unregister_driver(&wacom_driver);
	620	}
	621
	622	module_init(wacom_init);
	623	module_exit(wacom_exit);
	624	MODULE_LICENSE("GPL");
	625